Section 200(4) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(4)Unless they already have a watchkeeping certificate, officers of the Executive Branch shall, in the first instance, be promoted to Acting Lieutenant and sent to sea to obtain experience in watchkeeping. On obtaining such a certificate, they shall be confirmed as lieutenants. Officers who already have a watchkeeping certificate shall be promoted to the rank of confirmed Lieutenant on satisfactory completion of the course.Explanation. - Watchkeeping Certificates are not required in the case of Senior Commissioned or Commissioned Master-at-Arms and Senior Commissioned or Commissioned Bandmaster for confirmation as Lieutenant. On confirmation, these officers shall have no claim to revert to the General Service in the Executive Branch.
